Clamp



R. RUEMELIN July 2s, 1931.

CLAMP Filed March 17. 1930.

'i :Jwowntot 59h/hard Pimmel iw Patented jJuly 28, 1931 'nIoHARpRUEMEIQIN, or MILWAUKEE, .Wisconsin CLAMP Application fried Marchi?.i930. serial No. 436,319.

f -My invention relates "to an improvement in hose .clamps particularlyadapted to vbe used :for Clamping the endsy ofthe tubular cleaners in anair cleaning device. it is @essential fthat the airr Cleaningtubeswwh'ich are usually .made oi clothortextile :material so :that aircan pass through the samel in a .dustJarrest-er; have .their `endsclamped `Yon f to collarsy thatsup'port thelsame' tight enough lutoprevent air leakage and also holding the cleaning .tubes ',:frombecoming. disengaged `from ,the'snpportingzootlars.

A featureofmy elampresides in a vsimple structure which may be easilyAtightened 'by 'lhand, and ithus n ijaybe '.'easily attached -ordisengaged when it is /desired'to remove la cleaning tube from an aircleaning device.

i Ifhave not illustrated ythe aircleaningdevice in the` drawings,r buthavel vshown the vcollar mvfor'supportilng the Ifieailfile tube finSection yso as toil-lustrate .the `relative position of the A .furtherobject of my clampy isto' 'provide a Vstructure4 which permits the usel.off a .clampinjg ywire and provides areu'a'ted i bearing whichcompletesthe' surfaeeabetween the ends of the wire-and the parts .oftheclamp wherein the operating parts lare be drawntightlyabout toAclampmtheftube to the collar or pipe. l Y j My 'clamp ma 'be' used. witha lflexible wire"v as '.fthe clamping. element 'or a llband lof y 55" bein sections so as :tonhingetogether .if it n 5G ,of y.my invention willbe" more clearly and fully set forth in the following specification andclaims.- l

In the drawings lforming a part of the specification Figure l isa sideelevation of my hose' clamp. f

Figure'2 is a plan view of the same. Figure 3 is a side elevation of analternate form of hose clamp.

Figure 4 is a plan View of the clamp illus-"30 trated in Figure 3.

Figure 5 is a side elevation lof another 4n'ioc'lification of hoseclamp. Figure 6 is a plan view of theV hoseeiamp villustrated in Figure5.

The hose clamp' A is designed for use in holding flexible hoses or tubesupon a rigid coupling or connector.y A flexible clamping member lisadapted to encircle the Ihose vB, and by tighteningthis clamping .membertheflO hosev is pressed into contact with the collar such as G,- withinthe hose, and held in this position against slipping. The `hose B may eof any suitable nature and Where it is of a textile' nature, such as iinan air "cleaner, its' '75 Wall is naturally thin. y

Myfclfamp A s'formed with aroua'ed base plate l@ which is adapted to titkabout .the hose' for a small `portion of the Circumference thereof.4This base portion 10 is pro-"80 vided witha fiat upper sunfa'ce 11. Atone end of this fiat upper surface 1l a small lug t2 eXtend-supwardlyfThe lug' 12de only a portion' .of the .Width of :the baseflplate l0, andis centrally positioned laterally at they 85 end of the plate 10.

- Atthe otherend of the `j olate member 10, andl extending 'upwardlyfrom the surface 1:1 of-ithefsame, v)E provide a pairof spaced lugs13.-Theselugs lprojeot upwardly at o0 rig-ht angles to theiilat surfaee Ilof the baise vmenu-ber l0, and form a yoke for a'hoolr bolt 14. The bolt14 fits between the spaced ylugs 13, and extends in parallel relation tothe upper flat surface 11 of the base member l0, 95 the hooked endv l5extending toward `,the

f small lug l2, and the threaded end extending between the spaced lugs13. A vthumb nut 16 permits the bolt 14j to ,be adjusted,y

moving the' hook end 15 nearer to, l farther 100 from, the spaced lugs13 as it is turned, bear-v surfaceof which is arcuated4 in simulationwith the arcuated surface 26 under the body portion' 10 and follows thecontour of the hose to be clamped by my clamp. This portion 18 projectssomewhat beyond the end of the base plate 10, and is provided at its.extreme end with a pair of short oppositely extending ears 19. Theseears 19 are provided with small holes drilled through the body of thesamein parallel relation with the direction of the rearwardly extendingportion 18. Therends of the flexible wire clamping member 20 areinserted through these holes and clinched securely.

In'clamping a hose within my clamp A, place the base plate 10 extendinga portion of the distance about the circumference ofthe hose. Holdingthe plate in this position, I draw the wire clamping member 2O about thehose, looping the end of the same Vinto the hooked end 15 of thepreviously loosened hook bolt 14. By turning the thumb nut 16, the wireclamping member 20 may be drawn tightly against the hose,

yclamping the same in position.`

the clamp disclosed in Figures 3 and 4, the

ends ofthe wire are inserted through a single hole 22 near the end ofthe tightening bolt v23. The wire clamping member 24 being attached in'this manner, the hook end 15 of the bolt is made unnecessary, as arealso lthe oppositely extending ears 19 to which the ends' of the wireclamping member 2O were attached. The looped end ofthe clamping wire 24is passed about the base` of the lugs 13 in Vthe recess 25, while vthefree ends passthrough the hole 22 in the bolt 23. lThen byV tighteningYthe thumb screw 16 the wire clamping member 24 is drawn tightly aboutthe tube B 'inthe same manner as the wirej20 is tightened about the tubeB over the collar C. In this construc-v tion of the clamp A the undersurface of the body 10 is arcuated at 16' to fit the contour of the tubeabout which the-clamp is used.

InV Figure 4 I have illustrated the structure f wherein the bodyportionv lOvis formed in two parts, one carrying the Vlugs 13 and havinga pivot point 27, while the other portion 28 is pivotally connected at27 and thus the arcuated surface of the under side of the body of theclamp A is adjustable to the surface about which is being clamped.

In thisstructure I use a ribbon-like steel band E inplace of the wires2O or 24 heretofore described, and this band is provided with a notchedend which fits over the hook 15-of the bolt 14, while the other end ofthe .band E is provided with a series of openings 29 which hook over thehook member 3() formed in the body 10 of the clamp, as illustrated inFigure 5.

I have found that ordinary hose clamps will not'operate to Vclamp thetubular textile hose which is used in air cleaning machines owing to thefact that the wall of the textile `or cloth tube is thin and there is nobody to clamp against, and also owing to the fact that a very true bodyportion such as-10 is necessary with sufficient strength to permit theclamping force .to be exerted to the clamping wires 2O or 241or the bandE so as to tighten the same about the collar C. r My clamp provides asturdy base structure for holding the .draw Vbolt such as 14, againstwhich sufficient pressure can be exerted to pinch the flexible Vclampingelement about the tube andprovide a tight joint so that the tube-will beheld against disengagement and will ybe air-tight about the same. In theadjustable structure of Figures 5 and 6 the base structure of the clampbody for tightening theflexiblememberis adjustable to the desired shapeand fits the contour of Vthe surface over `which itis lbeing clamped. Myclamp may-be used for vother purposes and is particularly designed to bereadily applied or to permit the same to be disengaged and the parts areof a sturdy structurehaving a comparatively flat working surface againstwhich the thumb nut 16 may operate to draw the flexible clamping elementtight.

I claim: Y Y l .1. A` tubeclamp includinga body portionxhavingan underarcuated'surface, a flat bed above .said under arcuated surface,

a threaded ldraw bolt having a hook end 1 adapted V-to work onV saidflat surface an upwardly projecting lug on one endnof said body portionand a flexible clamping member one end, of" which is engaged'by saidhookl end and theV other end being connected to `said body vto pinch theflexible clamping member tightly about a tube to `support the same saidupwardly'projectingflug forming a guide for said flexible member.l

2. A clamp forv flexible air cleaner tubes including, a clamping body,an adjustable bolt member, 'a nut for adjusting said bolt, a nat workingsurface on said body for said nutfor adjusting said bolt, vaflexibleclamping member adapted rto extend'about the tube, means for connectingone end of said flexible member to said bolt cooperating with a flatsurface over Which said bolt operates to prevent rotation of tliebolt,means for connecting the other end of said flexible member to said bodywhereby when said nut is adjusted said flexible member Will be drawntightly about the tube.

3. A textile hose clamp for cleaners including, ya clamping body, Vanadjustable clamping bolt, lugs between which said bolt is adapted tooperate, a flat Working surface on one side of said lug, a Wing nutoperable on said Working surface, a flexible clamping band, means forconnecting Vsaid flexible band on one end to said body of said clamp, aflat surface on said clamp along which saidy bolt operates, means forconnecting the other end of said exible band to said bolt cooperatingwith said surface along which said bolt operates to prevent rotation ofthe bolt, and an arcuated bottom clamping surface formed on said bodycooperating with Y v said flexible band to clamp the air cleaning tubeto a collar.

4. A hose clamp including, a body portion having tvvo parts hingedlyconnected together, an adjustable clamping bolt, a nut for operatingsaid bolt, a Working surface formed on one of said body parts for saidnut to Work against, a hook formed on one of said body parts, a hookvformed on saidk bolt, and a fiexible clamping band, said band operatingWith said body to clam the hose about aconnecting tube over Whic thehose extends. y

5. A hose clamp including, a body portion, an arcuated clamping surfaceformed on the bottom of said body portion, an adjustable bolt carried ontop of said body I portion, lugs for receiving said bolt, a thumb nutfor engaging said bolt to yadjust the same, a surface on which said boltis adapted to rest, a flexible member having one end connectedv to saidbody portion and the other to said bolt to provide an adjustable hoseclamp and means on said bolt for connecting said flexible membercooperating with said surface upon which the bolt rests to preventrotation of said bolt.y f

v 6. A hose clamp including, a body portion, an arcuated under surfaceformed on said body portion, an upper surface for receiving .a bolt, anadjustablebolt, a nut for adjusting said bolt, anfupvvardly projectinglug on one end of said body portion, 'a Wire loop adapted to engage saidbolt and to fit on either side of said lug, and means for connecting theends of said Wire loop to said body portion whereby said Wire loop isheld with sides extending approximately parallel from said body portionand said bolt is adapted to adjust said Wire loop to pinch the samevvithsaid arcuated surface of said body portion to form a circular hoseclamp.

7. A hose clamp including, a body portion, an under surface formed onsaid body portion having a contour to fit the surface over which theclamp is adapted to be engaged, an adjustable threaded bolt, a Wing nutfor operating said bolt, lugs for holding said bolt in position to saidbody portion, a flexible clamping member co-operating With said bolt tobe adjusted thereby and engaged by said body portion to provide acircular hose clamp adjustable by said bolt and aguide lug for saidflexible member formed adjacent one end of said plate.

RICHARD RUEMELIN.

